Add sed script to import git commits back

utils/import-patches.sed

@@ -0,0 +1,13 @@
+#
+# use this sed script to import patches back from repo
+# where mkit has been embedded
+#
+#  1. in the downstream repo, get patches using `git format-patch`,
+#  2. apply this script to all files generated,
+#  3. use `git am` to import patches back
+#
+
+/^\(--- a\|+++ b\)/ s:utils/mkit/include:src/include:g
+/^\(--- a\|+++ b\)/ s:utils/mkit/make:src/make.skel:g
+/^\(--- a\|+++ b\)/ s:utils/mkit/mkit.mk:src/mkit.mk:g
+/^index /           s:100755$:100644: